Alien Swarm Beyond Brutal (ASB²)

ASB² mode (alien swarm beyond brutal) is a reborn ASBi game mode emphasizing the higher degree of difficulty, which includes the invalidity of such options as: friendly fire protection off, onslaught off, selection of easy and normal. More spawn, larger and faster hordes, tougher aliens, new types of drones. Stability servers. New achievements.

Check out the new Alien Swarm mod, Reactive Drop! New modes and maps! Download Client TAKE NOTE: The dedicated server wiki instructs you to install ASDS, then copy the reactivedrop folder into your X:\Program Files (x86)\Steam\SteamApps\common\Alien Swarm folder. The regular client requires the reactivedrop folder to be inside your X:\Program Files (x86)\Steam\SteamApps\sourcemods folder to show up in your Library.